Friday, October 31, 2008

Bivariate Normal Distribution Graph

Bivariate Normal Probability Distribution



List of symbols
[;P(x,y);] Bivariate normal probability distribution function
[;\mu_x;] Mean of x
[;\sigma_x;] Standard deviation of x
[;\mu_y;] Mean of y
[;\sigma_y;] Standard deviation of y
[;\rho;] Correlation between x and y
From: sitmo







Graphs from a very good source here
A note about bivariate normal distribution here


Then, how about Multivariate Normal Distribution ?

SymbioticSphere Update Slides

Short presentation for SymbioticSphere (20 Minutes)



Full Paper here(pdf)

Wednesday, October 15, 2008

Robotic self healing chair

UPS = Bad Service

It is the 5th time that UPS cannot delivery a thing to my house.
UPS keeps saying that the shipping Address is not correct. However, it is correct and google map can find it. Then, UPS sends a postcard to that address (the address that UPS believed it is not correct). The postcard reached me but UPS not.

such a bad service I've ever had.


waiting waiting talking talking calling calling with different and not responsive agents. (call then wait exactly 1 hour for talking with agent at facility).

This must be the last time.
I recommend you to change to USPS or Fedex.



.
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BOSTON,
MA, US
10/14/2008 6:25 P.M. DESTINATION SCAN

10/14/2008 1:55 P.M. A CORRECT STREET NUMBER IS NEEDED FOR DELIVERY. UPS IS ATTEMPTING TO OBTAIN THIS INFORMATION / THE ENTRY WAS VOIDED BECAUSE THE EXCEPTION WAS ENTERED IN ERROR.

10/14/2008 1:55 P.M. RECEIVER WAS UNAVAILABLE TO SIGN ON 3RD DELIVERY ATTEMPT / DELIVERY RESCHEDULED

On my desk

up-down dual, trees, fish and more.

Wednesday, October 01, 2008

Subprime, what is it?

Cartoon Presentation Easy to Understand:
(click to launch slide show)



From here : source